Extreme Concentration and Nanoscale Interaction of Light.

Autor:	Leuchs G; Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.; Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Physics, 91058 Erlangen, Germany.; Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia., Andrianov AV; Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia., Anashkina EA; Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.; Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia., Manshina AA; Institute of Chemistry, St. Petersburg State University, 26 Universitetskii prospect, St. Petersburg 198504, Russia., Banzer P; Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.; Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Physics, 91058 Erlangen, Germany.; Institute of Physics, University of Graz, 8010 Graz, Austria., Sondermann M; Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.; Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Physics, 91058 Erlangen, Germany.
Jazyk:	angličtina
Zdroj:	ACS photonics [ACS Photonics] 2022 Jun 15; Vol. 9 (6), pp. 1842-1851. Date of Electronic Publication: 2022 May 24.
DOI:	10.1021/acsphotonics.2c00187
Abstrakt:	Concentrating light strongly calls for appropriate polarization patterns of the focused light beam and for up to a full 4π solid angle geometry. Focusing on the extreme requires efficient coupling to nanostructures of one kind or another via cylindrical vector beams having such patterns, the details of which depend on the geometry and property of the respective nanostructure. Cylindrical vector beams can not only be used to study a nanostructure, but also vice versa. Closely related is the discussion of topics such as the ultimate diffraction limit, a resonant field enhancement near nanoscopic absorbers, as well as speculations about nonresonant field enhancement, which, if it exists, might be relevant to pair production in vacuum. These cases do require further rigorous simulations and more decisive experiments. While there is a wide diversity of scenarios, there are also conceptually very different models offering helpful intuitive pictures despite this diversity. Competing Interests: The authors declare no competing financial interest. (© 2022 The Authors. Published by American Chemical Society.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu